Question

-2+0,6b- 2/5(3b-5) при b=-1/3 пж

Answer 1

Ответ:

вот ответ)))))))))))

Answer 2

Объяснение:

-2+0,6b-6/5+10/5=

=-2+0,6•(-1/3)-6/5•(-1/3)+10/5=-2 2/5

Answer 3

To evaluate the expression (-2 + 0.6b - 2/5(3b-5)) when b = -1/3, we substitute the value of b into the expression and perform the calculations step by step:

(-2 + 0.6b - 2/5(3b-5))

Let's start by substituting b = -1/3:

(-2 + 0.6(-1/3) - 2/5(3(-1/3) - 5))

Next, simplify the expression inside the parentheses:

(-2 - 0.6/3 - 2/5(3/3 + 5))

Simplify further:

(-2 - 0.2 - 2/5(1 + 5))

(-2 - 0.2 - 2/5(6))

Now, calculate the multiplication:

(-2 - 0.2 - 2 * 6/5)

(-2 - 0.2 - 12/5)

To perform addition and subtraction, we need to find a common denominator for 5 and 1:

(-10/5 - 1/5 - 12/5)

Now, combine the numerators over the common denominator:

(-10 - 1 - 12) / 5

Simplify the numerator:

-23 / 5

The result is -23/5.

Therefore, (-2 + 0.6b - 2/5(3b-5)) when b = -1/3 is equal to -23/5.